[Tutor] parsing a continuous log file
Michael H. Goldwasser
goldwamh at slu.edu
Fri Nov 30 02:08:46 CET 2007
The for loop below will exit once it hits EOF (and will not continue
if more data is later appended. But as Alan says, a while loop will
suffice. I've tested the following variant.
f = file('foo.txt')
line = f.readline()
print "do what you want with", line
else: # currently at end of file
time.sleep(1) # don't want to poll too quickly
On Friday November 30, 2007, Alan Gauld wrote:
> "ray sa" <bizag007 at yahoo.com> wrote
> > used in UNIX called the tail command.
> > May be someone can help me to achieve the same result with modifying
> > the above code?
> Sorry i didnm't look too closely but i think you should only need to
> keep the file open andd then loop around with a delay.
> Sometjing like:
> f = open('foo.txt')
> for line in f:
> print line
> That will keep reading the lines until it hits the end of the file.
> Of course if the file is eventually empty then it exits so you
> may want a while True loop instead and only print if the line is non
More information about the Tutor